Important: The following steps must be completed before using the symptom tables.
- Perform
Diagnostic System Check - Instrument Cluster
before using the Symptom Tables in order
to verify that all of the following are true:
| • | The control module(s) can communicate via the serial data link. |
- Review the system operation in order to familiarize yourself with
the system functions. Refer to the following:
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation
of the Instrument Cluster or Audible Warning Systems. Refer to
Checking Aftermarket Accessories
in Wiring Systems. |
| • | Inspect the easily accessible or visible system components for
obvious damage or conditions which could cause the symptom. |
| • | For any indicator relating to fluid level, perform a visual inspection
of the fluid level before beginning diagnosis. |
| • | Verify that the indicators work properly during the bulb check. |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent
conditions. Refer to
Testing for Intermittent Conditions and Poor Connections
in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order
to diagnose the symptom:
Gauges
Indicators
| • | ABS Indicator Always On or Inoperative |
| • | AIR BAG Indicator Always On or Inoperative |
| • | Brake Warning Indicator Always On or Inoperative |
| • | SECURITY Indicator Always On or Inoperative |
| • | SERVICE ENGINE SOON Indicator (MIL) Always On or Inoperative |
| • | BATTERY Indicator Always ON |
| • | BATTERY Indicator Inoperative |
| • | CHECK GAGES Indicator Always ON or Inoperative |
| • | SERVICE 4WD Indicator Always ON or Inoperative |
| • | TOW/HAUL Indicator Always ON. Refer to Automatic Transmissions. |
| • | TOW/HAUL Indicator Inoperative. Refer to Automatic Transmission. |
Instrument Cluster Dimming
Odometer
PRNDL Display
PRNDL Display Inaccurate or Inoperative
